Definitions

1. noun

A small tooth or projection on a gear or other machine part.

“The pinion gear was damaged and needed to be replaced.”

2. noun

A bird’s claw, especially one of the hind claws.

“The bird’s sharp pinion helped it climb the tree.”

3. noun

A joint or hinge in an aircraft’s wing.

“The pinion of the wing allowed for smooth movement during flight.”

4. verb

To cut or shape the edge of something, especially a piece of wood, with a tool called a pinion.

“The carpenter pinioned the wood to create a smooth finish.”

5. verb

To hold or grasp something with the claws, especially the hind claws, of a bird.

“The bird pinioned the branch with its sharp claws.”